Biological sciences

The group-specific component (GC) has been analyzed in two African-derived Quilombo populations from Curiau and Pacoval in the Brazilian Amazon. With high frequencies of GC*1F and lower frequencies of GC*1S, these populations are similar to each other and to other African-derived Brazilian populations, as well as to African populations, but unlike Europeans and South American Indians.

Monthly distribution of menarche among schoolgirls from a municipality in Southeastern Brazil

Article Abstract:

The schoolgirls of Barrinha, Brazil, were used in an analysis of the monthly distribution of menarche among them. This rural municipal school, on the verge of urbanization, was evaluated on the basis of the association between seasons, month of the year, birth month and the occurrence of menarche.

A study to compare blood pressure and related cardiovascular risk factors among three Caboclo communities of Brazilian Amazon is presented. Results suggest that seasonal variation does not affect average blood pressure in men, but it does affect the women.